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Cascade use of digestate from methane fermentation using marine biomass

Research Project

Project/Area Number 16K21286
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Design and evaluation of sustainable and environmental conscious system
Naval and maritime engineering
Research InstitutionOsaka Prefecture University

Principal Investigator

KURODA Kana  大阪府立大学, 人間社会システム科学研究科, 准教授 (70708023)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Discontinued (Fiscal Year 2019)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords海産バイオマス / メタン発酵 / 栄養塩の偏在 / ノリの色落ち / 鉄 / メタン発酵残渣 / 海洋肥沃化 / 発酵促進 / バイオマス / 海洋利用 / 廃棄物再資源化
Outline of Final Research Achievements

Ulva sp. (green seaweed) often proliferates explosively and piles up in shallows. This phenomenon is called “green tide,” caused by increased nutrient flow into an enclosed sea area. This research proposes that the digestate from methane fermentation using mixed biomass (Ulva sp. and food waste) can be applied to the cultivation of Pyropia yezoensis (edible laver seaweed, nori in Japanese), which has recently suffered from decolored phenomena because of decreasing nutrients. The results highlight that the significant absorption of nutrients and color recovery occurred because of digestate utilization, indicating its positive effects on decolored nori. Also, digestate can be expected to promote methane production that may be caused by iron derived from Ulva sp..

Academic Significance and Societal Importance of the Research Achievements

窒素やリンなどの栄養塩は,人間活動に欠かせないものであり,海洋環境の保全のためには栄養塩を適正に管理することが重要である。本研究成果により,栄養塩を適材適所に活用することが可能となり,社会的要請の高い「栄養塩の適正管理」の一助となる。また,メタン発酵は「再生可能エネルギー」「循環型社会の形成」に重要な役割を果たし,都市部での利用が急速に進んでいるものの,発酵残渣の利用に関する知見は乏しく,海を介した栄養塩循環の視点が欠けている。本研究成果は,海陸一体型の循環型社会の礎となる。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (7 results)

All 2018 2017

All Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] 海産バイオマスを用いたメタン発酵消化液からのリン回収手法の検討2018

    • Author(s)
      中谷直樹,渡辺志郎,黒田桂菜
    • Organizer
      日本船舶海洋工学会春季講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Experimental study of hydrogen fermentation of seaweeds for efficient operation2018

    • Author(s)
      K. Kuroda, K. Fujii, M. Akase
    • Organizer
      Techno-Oceans/OCEANS 2018 MTS/IEEE Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 微量金属を用いたメタン発酵促進に関する基礎的調査2018

    • Author(s)
      伊藤早希,黒田桂菜
    • Organizer
      第27回海洋工学シンポジウム講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 海産バイオマス由来のメタン発酵残渣を 用いた色落ちノリの回復実験2018

    • Author(s)
      黒田桂菜
    • Organizer
      日本船舶海洋工学会海洋工学・海洋環境合同研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effect of digestate from methane fermentation for the recovery of decolored laver seaweed2018

    • Author(s)
      K. Kuroda
    • Organizer
      2nd International Conference Bioresource Technology for Bioenergy, Bioproducts, and Environmental Sustainability
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hydrogen fermentation of waste marine biomass2017

    • Author(s)
      Kana Kuroda
    • Organizer
      日本船舶海洋工学会講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Experimental study of hydrogen fermentation of waste marine biomass2017

    • Author(s)
      Kana Kuroda
    • Organizer
      The 8th East Asian Workshop for Marine Environment and Energy
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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